I went with ER street/track 2 system, completed the entire front & rear. I love it! Completely different car. The right rear trailing arm was a PITA! (See photo) I bought a cheap socket (22mm?) and "cut" the length on my lathe, this helped with removal of left trailing arm bolt. I had to cut the right side. PO had accident and right arm was replaced. The "nut" was rounded off, so my socket wouldn't do the job.
Sorry for long post- I love the new ride!